lichtenberg



E. H. LI'CHTENBERG. ,LIFTING 'CRANE FOR CONCRETE MlxEHs.

APPLICATION FILEDVAUGJG, 1918.

.l ,402, 1 68. v I Patented Jan. 3, 1922.

3 SHEETS-SHEET I.

M/YZNE'JS Haare/wg@ E. H. 4LICHTENBERG. LIFTING CRANE.FOR CONCRETE MIXERS.

APPLICATION FILED Aus.2e.191ja` 1,402,158, l Patented Jan. 3,1922.

3 SHEETS-*SHEET 2.

L). zwi/Waff Arma/Vm UNIT@l F'FC.

f Enron I-i. arenal-enanas, on rrrnivnnirnn, wrsceNsIN, assrerNon, BY IvIEsNE nssIeNranNrsa To Kennern@oor/trani, or MILWAUKEE., WISCONSIN, A

oonrona'rionor wIsooNsIN.

'f LIrr'INe enanai son ceNennfTn nirxnns.

igiloaifes.

To' all 407mm t may concern:

` v T 'Be it known that l, Enron la. LICHTEN- enne, a itizen ot the United States,'residing a lvfiilwaukeain the county oi' l/lilwaukee andlStateofWisconsimhave invented certain new and useful lmprovements in liliting Cranes for Concrete Mixers, of vwhich theitoliowing isa specitication.

This invention has 'to do with `machines for buiklingroads, especially concrete roads, and i2 elves primarily the provision of a V,crane attachment applicablev togroad or street paving `machines of the type com- 1'ffn-111'1ib-'U'tii moniy Ain usc today an( cisc oser y n1 ed vtzrtes lietters Patent Reissuer No. 13,617 granted September16th, f1913 and No. 1,141 470 granted June 1st,` 1915.y .v n i `.Paving machines oi' thetype'V above reic'erred to are adapted' to .be used in connection with narrow. gage railways'on kwhich travel hopper cars vadapted `to convey the aggregate materials such as sand and gravel to the paver. 'lhecrane attachmentproposed by this invention is mounted upon the paving machine which v,virtuaflly coinprises a portable concrete mixing and distributing plant, said-crane being designed .to iacilitate'the lifting oi .the loadedv hoppers oi? the cars running along" the .temporary railway paralleling the-road paving operation. After the loaded hoppers are lifted by the crane the latter is adapted to be moved-to carry each ,hopper over `the loading skip or bucket of the paver, ,whereupon its contents are dumped into the loading skip, the cra-ne swung to carry the hopper back to its truck, and theskip operated to receive the materials and feed the same' into the drum of the mixer forming a lpart of the paver. i v

The improvements oi this invention comprise primarily certaindetails ot construction and operative 'features of the crane attachment whereby itis most conveniently adapted to be operated in conjunction with the paver and by the motor with which the latter is equipped. i

The construction,employed-to the kabove end is clearly set forth in the following detailed description and illustrated inthe accompanying drawings, in which Figure 1 is aside elevationot an end portion ot a paving` machine embodying my` Specification of Letters Patent.

more" clearly the kother suitable construction.

`msm preferably-Includes a hoisting drum 1 suitably supported on a shaft 2 mounted in Patented Jan. 3, 1922.

appueamnjma august 26,1918. serial No. 251,413.

drumot the table being only partially illustrated;

Figure 2 is an end view of the paver, the loading skip not shown, and illustrating 4 driving connections betweenthe hoisting drum and the hopper elevating cable;

Figure 3 is a plan View somewhat diagrammatically illustrating the essential parts ot the attachment forming the invention, dotted lines ill'ustating the boom of the crane swung as when carrying the hopper to and 'from the truck of the car of which the hopper 'forms a part;

Figure 4 is a sectional view through the boom, showing more clearly the mode of supportof the adjustable carrier on the boom. f Y

The general features ol' the paving machine to which my invention is preferably attached being illustrated in the patents above enumerated will not be additionally The drawings illustrate a portion of the truck of the machine at A, the same being mounted. upon the usual ground wheels B and "having the framework C carrying the general operating mechanisms of the machine, also the motor not shown. The mixing drum is denoted l) and is adapted to be supplied with the aggregates to `be mixed therein by means ot a loading skip E. The

operating mechanism for said skip may be yo'l'the class described. in my Letters Patent No.`1,103,788 issued July 14, 1914, or any Said mechathebearings in the framework C, said drum `having a cable 3 wound thereabout and leadingv oli' to suitable driving or pulling mechanism voperable from the motor of the machineg'lhe skip E is .connected by the ,cables/4 leading over pulleys 5 at the top ci the frame C, with the shai't 2 between said cables 4 winding about small drums 6 adapted to turn with said shaft. The skip E is. ordinarily raised by `turning ot the hoisting drum 1, winding the cables 4 about the drums G, lowering of the skip being iormedyvr U tions, said ,hooks enga ng over the'lower accomplished 'by relieving the ull on the cable 3 permittmg unwinding o the cables 4 from said drums 6.

Mounted on an end of the truck, preferably in a detachable manner as by means of a bracket 7 seen best in Figure 2, is"an arm 8 pivotally connected with the bracket 7 by a pin 9.v The arm 8 is ordinarily niairtained against pivotal movement by eonpec-k tion of a small plate 10 between the same and the frame C of the machine. The arm 8 forms a support for a mast 11 the lower end of which is suitably journaled upon fthe arm and the upper end of which is jour'naled in a suitable bearing on a bracket 12 attached to the upper portion `of the 'frame C. The mast 11 has mounted'thereon yfor hori zontal swinging movement therewith aboom 13 preferably made from an I-beam. An adjustable guy Wire 14 connects the oute'r end portion of the boom 13 with the upper end portion of the mast 11 andacts as a customary brace in conjunction with a reinforcing guy wire 15 attached at its 'lowe'r end tothe 'bottom portion ofthe mast and at its upper end to the top ofsaidrmast. and engaging intermedia-te its ends with1 an arm 16 projecting from the inner end of the v boom 13 in substantial alinement with the latter. 4. There is; mounted for adjustmpnt longhwfise of the boom 13 a c 1, equipped with apair of pulleys 18. l carnerseen best in Fi re 4 comprises spaced sides tuhooks. 17 at their. Upper ,p0r-

flanges of the I-beam oom, 13.l attache to the outer end of the boom lf3 a .cable 1 which passes over the Ioutermost pulley 18 down around a movable s sion ulley 20 up and over the inner .pp y 18. ro'm there the cable over a ulley 21 on the inner `end of the ownwards'around a pulll 22 adjustzihl supported'b'y a clutch braeietBB -s'hftxfbe longitudinally of the inastr1`1. Froiii 1the pulley 22th'ecable 19 passes up'wardl` over a; vertige" ulley 24, into engam with a horizonte pulley 25, bth f vese pllleys being supported at the upper end portion of the mast 11; from thence the cable passes over'another' pulley 26 and leadslfrom'there to the shaft 2 carr ing 'the drums land 6 previously describe The cable 19 is adapted to wind about the' shaft 2,*the winding in such manner being incident to unwindng of the 'cablesS tfrom the drum 6,Y VrIn'this'manner Iain enabled to utili'ze'the weiglit' of the lskip E in descending, Yas a Ameans for windingthe cable 19 about -the shaft 2 and it will be later seen that this expedientf 'is employed to utilize the skip E a'device for elevating the hopper or dirmprlg'fby of a car from its seat upon the'truckof'the car.

The suspension pulley 20 has a bail 27 'weak @asap ofte ensue-as n *te the' su esiti PPO g in its floweieiest' operative posicin.

connected with its axis, which bail has as supports a :chain equivalent suspension 28, im a plvot pin 29 ig a cfnnetidn between the side members o f a rapple device 30. A hoo'knl'y Be'pr'ovie for the lower end of the chain 28 to facilitate adjustment of 'the' operative suspension lengthV o f said chain*L thereb correspondingly raising or lowering slig 't 'y`I the grapple device 30. The grapple device 30 comprises the pivotally cmmected si meinbersrpreviousl referjred lsaid members being forme at 'their-'lower extremities with hooks 31 adapted to engage trunions 32 on the ends of thewhopper or o' the hopper car which is F. This'h pper car F 'may' be o'fganyj' envuuenal't uit@ commonly. used"today,-ompris'ing a w eel sees :natifs end portions in whiichsets the] opper-like body 3 3 is received aid read'v 'Sllp'ite'd in a: remova'ble`"tiiannr. ie. of t eA side members of the 3U carries a hook 35 ca- 'With one edgeportion of op"jr 33 to prevent the tilting f 'S'aidf the hooks 31 have s se ses if e` ,y ,"f Aaenlp e. The egilstiu'ctiorlal features 'of `the presaan' maya@ be y p P to 'f the attachfndr'it flnnl toren er the u framefpd"parts*o`fthe chine as n y y @renewing-@Maes on uit ed@ af'uw?efeel:v fr remue um there @minieme-,is possente a ene. j me Vmeer` aange laf fase er uleaside llilelsfi'mlhipaftofthle Tilt- 'ffthetr' jboi'y latex-al1 midfrela 'bd vdrs upon if is :rammed is" ums previded isst; the aneeuen 3e beingpivemny dchdtothetakl'seton 37 of thetruck anda 'niit b'engis'erwed upon the bolt at th'end cooprative with the' rmeportion ftheGTUeR.' Y Y v Aissumingmut a trein 'of aus F ll'ed with the aggregates for use in the fpaving maehineis adjaent" to the"pave, updn a tksubstfarltilly prallelingthe -ioadfpavihgl operation Midship inn 1elevated itself"first',`thelgrlxlleiple='deviceL 0`is of" t'irle 9, boom- '1B df t'he crine may thene swlmg laterally relatively to the machine fun'til the pple device 30 is above 'the' hopper of t e cai-F. Thefopeator willthen engage meteors 31% erelid device eofwiulwhemmnions 32 of the'hbpper, whereipon'the 'operator' oftheipeving machine may' permit :lweing ofitlie *ski lE. Theloweing movemetef the slp utilizes the weight of the latter to transmit motion to the shaft 2 .car F. The

Lineales through the pulleys 6, and causes a winding up on said shaft of the cable 19 which passes over the various pulleys previously set forth. The skip E and the operating connections are of course so arranged that the resultant foot-pounds of the skip in its descent are much greater than those necessary to raise the hopper 33 and its contents some six or eight inches. rThe skip having reached the ground and the hopper 33 raised from its seats upon the car F, the boom will be swung to bring the hopper above the skip E, whereupon the hook 35 will be unlatched and the hopper turned over so as to dump the aggregate material therein into thc skip. Thereafter the hopper, by swinging the boom 13 outwards, again is restored to a position above its seats upon the paving machine operator will now elevate the skip E to charge the mixing drum of t-he machine and by so doing the cable 19 is permitted to unwind from the shaft 2 and the hopper 33 is thus lowered to engage with the car 1T, or in other words restored to itsy position resting upon the truck of the car F.

The now empty car F may be pushed forward out of the way, a loaded car moved beneath the grapple device 30, and an operation previously set forth repeated. 1t is notable that owing to the mounting of the carrier 17 .and the method in which the cable 19 is engaged over the pulleys of said carrier, said carrier may be shifted readily inwardly and outwardly along the boom, its position necessarily being dependent upon the distance between a point above the skip E and the track of the railway along which the hopper cars operate. rllhe adjustment of the carrier 17 is allowed for by mere travel of the cable 19 over the pulleys 18.

For controlling the extent to which the cable 19 is paid out, in order to permit the necessary raising and lo-wering of the hopper 33, the clutch bracket 23 is employed and operates in the well known manner of such brackets to be positioned at different points lengthwise of the mast 11 incident to clutching engagement with said mast. 1t will be apparent that 1 advantageously utilize the different diameters of the shaft 2 and pulleys 6 in obtaining desirable leverage whereby the skip E may act to elevate the hopper at the proper time. The mounting of the arm or support 8 and bracket 7 on the truck of the machine is advantageous in readily effecting proper alinement of the mast 11.

Having thus described my invention, what 1 claim as new is:

1. 1n a crane of the class described, in combination, a support, cable operating means thereon, a vertical mast mounted on the support, a boom mounted to swing horizontally and carried by said mast, a pulley supporting clutch bracket adjustable on the mast, a grapple device, and a cable secured to the boom and arranged to support the grapple device, the cable engaging the pulley of the clutch bracket and being connected with said operating means.

2. 1n a crane of the class described, in combination, a support, cable operating Vmeans thereon, a vertical mast mounted on the support, a boom mounted to swing horizontally and carried by said mast, a pulley supporting clutch bracket adjustable 0n the mast, a grapple device, and a cable secured to the boom and arranged to support the grapple device, the cable engaging the pulley of the clutch bracket and being connected with said operating means, the supporting relation between the grapple device and cable being established by a carrier mounted on the boom and movable to shift the point of supporting suspension of the grapple device relatively to the boom.

3. 1n a crane of the class described, in

combination, a support, cable operatingmeans thereon, a vertical mast mounted onl the support, a boom mounted to swing horizontally and carried by said mast, a pulley supporting clutch bracket adjustable on the mast, a grapple device, and a cable secured to the boom and arranged to support the grapple device, the cable engaging the pulley of the clutch bracket and being comiected with said operating means, the supporting relation between the grapple device and cable being established by a carrier mounted on the boom and movable to shift the point of supporting suspension of the grapple device relatively to the boom, and pulleys on the carrier affording a slippage connection between the cable and the carrier.

4. 1n a crane of the class described, in combination, a support comprising a truck engaging bracket, an adjustable mast carrying arm on the bracket, means for holding the mast carrying arm in an adjusted position and a boom supporting mast mounted on the arm.

5. 1n a crane of the class described, the combination with a support, of cable operating means thereon, a mast mounted on the support, a boom adapted to swing horizontally and carried by said mast, a carrier adjustable along the boom, and provided with guide means, a cable connected with said operating means and boom and engaging the guide means of the carrier, a suspension device associated with the carrier and engaging said cable, a loading skip, means to raise and permit lowering of the skip, and means to connect the skip and cable operating means whereby the skip may operate the suspension device.

6. A crane as set forth in claim 1, and an associated loading mechanism involving a Cir skip, means to raise and permit lowering of the skip, and a connection intermediate the skip and said cable operating means such that the skip is capable of actuating the said operating means.

7. In a crane of the class described, the combination with a truck including a running gear and bed, a bracket engaging the running gear, an adjustable mast carrying arm on the bracket, means for connecting the said arm to the truck bed, and a boom supporting mast mounted on the arm.

8. In a crane of the class described, the combination with a support, cable operating means thereon, a vertical mast mounted on the support, a boom carried by said mast, a grapple device associated with the boom, a cable secured to the boom and arranged to engage the grapple device, said cable bein connected with the operating means, a c utch bracket adjustably mounted upon the crane, and a guide member carried by the clutch bracket and engaging the cable, the adjustment of the bracket regulating the operative position of the grapple device.

9. In a machine of the class described, a

supporting frame, a frame comprising a suitable mast, a boom carried thereby and adapted to swing laterally, a grapple device for cooperation with a hopper containinff a load of material, said grapple device belng associated with the boom, a loading mechanism associated with the crane andcomprising a skip, operating means common to the crane and to the skip and including an operating shaft mounted on the supporting frame of the machine, an operating cable, a winding drum on said shaft connected with said cable so that the cable may wind on and unwind therefrom, cables connecting the skip with said shaft so that the operation of the winding drum by the operating cable is adapted to raise and lower said skip, and a cable adapted to wind and unwind relatively to said shaft and connected with said grapple device of the crane to raise and lower said grapple device, the raising of the grapple device bein caused by the turning of the shaft aforesai incident to lowering of the skip and unwinding action of the cables connecting said skip with the shaft.

In testimon whereof I affix my si nature.

E ICH H. LICHTENB RG. 

